Q9. Which three statements are true about connection strings and service names used to connect to an Oracle database instance?
- (A). A single database instance can support connections for multiple service names.
- (B). A service name is created by a listener.
- (C). A single connection string can refer to multiple database instances.
- (D). A connection string including a service name must be defined in the cnsnames.ora file.
- (E). A connection string must include the SID of a database Instance.
- (F). Different connection strings in the same tnsnames.ora file can contain the same service name, host and port parameters.
Answer: A,C,F